73) Over the years, tools and technology themselves as a source of fundamental innovation have largely been ignored by historians and philosophers of science.　　句子分析：　　第一、句子可以拆分为三段：Over the years, tools and technology themselves as a source of fundamental innovation / have largely been ignored / by historians and philosophers of science.　　第二、句子主干结构是一个简单的被动语态句：tools and technology...have largely been ignored by ...主语部分有一个themselves反身代词　　as a source of fundamental innovation介词短语做定语　　第三、词的处理：　　Over the years 多年来　　philosophers of science 科学思想家们　　完整的译文：　　73)工具和技术本身作为根本性创新的源泉多年来在很大程度上被历史学家和科学思想家们忽视了。

　　74) Galileo's greatest glory was that in 1609 he was the first person to turn the newly invented telescope on the heavens to prove that the planets revolve around the sun rather than around the earth.　　句子分析：　　第一、句子可以拆分为三段：Galileo's greatest glory was / that in 1609 he was the first person to turn the newly invented telescope on the heavens / to prove that the planets revolve around the sun rather than around the earth.　第二、句子主干结构是：　　1)系表结构Galileo's greatest glory was that...　　2)不定式短语作定语结构the first person to turn...　　3)动词+宾语从句作目的状语to prove that...　　第三、词的处理：　　turn the newly invented telescope on the heavens (介词on译成动词)把新发明的望远镜对准天空　　rather than 而不是完整的译文：　　74)伽利略的最光辉业绩在于他在1609年第一个把新发明的望远镜对准天空，以证实行星是围绕太阳旋转而不是围绕地球旋转的。　

　75) Whether the Government should increase the financing of pure science at the expense of technology or vice versa often depends on the issue of which is seen as the driving force.　　句子分析：　　第一、句子可以拆分为三段：Whether the Government should increase the financing of pure science at the expense of technology or vice versa / often depends on the issue / of which is seen as the driving force.　　第二、句子主干结构是：　　1)表示选择意思的从句Whether the Government ...or ...究竟是……还是……作句子的主语，谓语和宾语是depends on the issue　　2)of which是宾语the issue的定语从句。　　第三、词的处理：　　increase the financing of pure science 增加对纯理论科学的经费投入　　at the expense of technology 减少对技术经费的投入　　the driving force 动力，驱动力量　　完整的译文：　　75)政府究竟是以减少对技术经费的投入来增加对纯理论科学的经费投入，还是相反，这往往取决于把哪一方看作是驱动力量。